Research on Implementation Path and Risk Control of Large Enterprise Campus Network Upgrade and Renovation Projects

Abstract

In recent years, with the addition of more services such as ultra-high-definition video, real-time industrial signaling, distributed storage, etc., the backplane bandwidth, forwarding capacity and the number of concurrent connections of traditional campus networks have reached their limits. At the same time, the upgrading of these networks has become increasingly complicated due to all kinds of multi-vendor protocols and irregular network topologies. The subject of this paper is the implementation path and risk control of an upgrade and renovation project, and the reasons for doing so are divided into three parts: performance decline, compatibility restrictions and change sensitivity; thus, a progressive decoupling deployment of the control and forwarding planes, a hybrid migration sequence for virtualization and physical devices, and a service-unaware cutover scheduling model are proposed, and at the level of risk control, atomic rollback boundaries are set, a real-time suppression mechanism for flapping convergence is added, and a fault injection pre-validation method is established to build an all-weather technical system for upgrade and renovation.